I found out about Lucid Dreaming about a year ago, basically in a nut shell for people who have never heard of it is this. When you're awake, your brain interprets the world by input from your sensory systems. When you sleep your mind relies entirely on its own input to build images (causing them to become chaotic or confusing.)
Lucid dreaming is when you are able to recognize when you're dreaming. This allows you to control the input of your dreams, basically, like Garry's mod in your head, only much deeper than that. I've only managed it once because of my hectic sleep schedule, but it was worth it for that one time.
And if you don't believe me, here are some links to groups dedicated to this.
"Exploring the World of Lucid Dreaming." By Stephen Lebarge. This book is really useful, I think it's provided for free by the lucidity institute. Check it out, really useful.
Of course we need a wikipedia article.
Best forum on the internet for this stuff.
Its worth it to learn this for a few reasons.
1) You spend something like a quarter of your life sleeping, this is a better way to manage your time than barely remembering your dreams.
2) Because you can do anything you want, it allows you to face personal problems.
3) It's really really fun, from what little I've managed.
Anyone here ever tried it?